/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.mpp.execution.operator.window;

import org.apache.iotdb.db.mpp.aggregation.Accumulator;
import org.apache.iotdb.tsfile.read.common.TimeRange;
import org.apache.iotdb.tsfile.read.common.block.TsBlock;
import org.apache.iotdb.tsfile.read.common.block.column.Column;
import org.apache.iotdb.tsfile.read.common.block.column.TimeColumn;

public class TimeWindow implements IWindow {

    private TimeRange curTimeRange;

    public TimeWindow() {
    }

    public TimeWindow(TimeRange curTimeRange) {
        this.curTimeRange = curTimeRange;
    }

    public TimeRange getCurTimeRange() {
        return curTimeRange;
    }

    public long getCurMinTime() {
        return curTimeRange.getMin();
    }

    public long getCurMaxTime() {
        return curTimeRange.getMax();
    }

    @Override
    public Column getControlColumn(TsBlock tsBlock) {
        return tsBlock.getTimeColumn();
    }

    @Override
    public boolean satisfy(Column column, int index) {
        long curTime = column.getLong(index);
        return curTime <= getCurMaxTime() && curTime >= getCurMinTime();
    }

    @Override
    public void mergeOnePoint() {
        // do nothing
    }

    @Override
    public boolean hasFinalResult(Accumulator accumulator) {
        return accumulator.hasFinalResult();
    }

    @Override
    public boolean contains(Column column) {
        TimeColumn timeColumn = (TimeColumn) column;

        long minTime = Math.min(timeColumn.getStartTime(), timeColumn.getEndTime());
        long maxTime = Math.max(timeColumn.getStartTime(), timeColumn.getEndTime());

        return curTimeRange.contains(minTime, maxTime);
    }

    public void update(TimeRange curTimeRange) {
        this.curTimeRange = curTimeRange;
    }
}
